A water heater according to the present invention includes: a heating unit that includes a burner provided to cause a combustion reaction from air and fuel, and that is provided to generate heated water by using heat generated by the combustion reaction; and a humidifier unit that generates water steam by evaporating water using a combustion gas generated by the combustion reaction and discharged from the heating unit, and provides the water steam together with the air to the burner.

A method for starting up a hot ultrapure water production system that produces hot ultrapure water by heating ultrapure water to a supply water temperature, for supplied to a point of use, the method involving: alternately passing heated water and cooled water through a hot ultrapure water pipe through which the hot ultrapure water flows, the heated water being obtained by heating the ultrapure water to a temperature higher than room temperature and the cooled water being obtained by cooling the ultrapure water to a temperature lower than the temperature of the heated water in a range of from room temperature to the supply water temperature.

A heater comprises a combustion chamber and a jacket extending about the combustion chamber. There is a fan having an output which communicates with the combustion chamber to provide combustion air. There is also a fuel delivery system having a variable delivery rate. A burner assembly is connected to the combustion chamber. The burner assembly has a burner mounted thereon adjacent the combustion chamber. The burner receives fuel from the fuel delivery system. There is an exhaust system extending from the combustion chamber. An oxygen sensor is positioned in the exhaust system to detect oxygen content of exhaust gases. There is a control system operatively coupled to the oxygen sensor and the fuel delivery system. The control system controls the delivery rate of the fuel delivery system according to the oxygen content of the exhaust gases.

The present disclosure relates to aerosol delivery devices. The aerosol delivery devices include mechanisms configured to deliver an aerosol precursor composition from a reservoir to an atomizer including a vaporization heating element to produce a vapor. For example, a bubble jet head may be configured to dispense the aerosol precursor composition to the atomizer. The bubble jet head may be fixedly coupled to the atomizer. The bubble jet head may include a precursor inlet, an ejection heating element, and a precursor nozzle. The atomizer may include a vaporization heating element.

The various embodiments described herein include methods, devices, and systems for conditioning air and heating water in a vehicle. In one aspect, a method includes: (1) obtaining a desired temperature for an interior of the vehicle; (2) obtaining a desired temperature for water in a water storage tank of the vehicle; (3) determining a current interior temperature; (4) and a current water temperature; (5) if the current water temperature is below the desired water temperature, and if the current interior temperature is below the desired interior temperature, operating a system in a first mode to concurrently heat the water and heat the interior; and (6) if the current water temperature is below the desired water temperature, and if the current interior temperature is above the desired interior temperature, operating the system in a second mode to concurrently heat the water and cool the interior.

A system for providing temperature-controlled water in an aircraft has a tank, a water temperature-controlling unit, a control unit, and a power supply terminal. The water temperature-controlling unit can be coupled to the tank to heat or to cool water situated therein. The control unit is connected to the water temperature-controlling unit to activate the water temperature-controlling unit for controlling the temperature of water in the tank to a predefined temperature. The power supply terminal can be connected to an on-board voltage source for the water temperature-controlling unit and the control unit to be supplied with electrical voltage. The system is in the form of a coherent and self-contained unit which can be integrated into a standard parking place of a galley of the aircraft. The tank is mounted so as to be exchangeable or the system has a water discharge connection which is coupled to the tank.

A heat source system is to be connected to another heat source system. The heat source system includes a heat source device and a control part. The heat source device includes a water regulation valve configured to regulate a flow rate of supply water flowing in the device and is configured to heat the supply water. The control part is connected to the heat source device, and is configured to acquire flow rate information of the supply water supplied to the other heat source system and the heat source device, to close the water regulation valve when a flow rate of the supply water is 0 or more and less than a first set value, and to open the water regulation valve when the flow rate of the supply water is equal to or greater than the first set value.

A stamped bare wire metal heating element for heating fluid in a tankless electric fluid heating device may include a first electrically conductive portion extending linearly; a second electrically conductive portion extending linearly; and a third electrically conductive portion connecting the first electrically conductive portion to the second electrically conductive portion at a first end of the stamped bare wire metal heating element, wherein the stamped bare wire metal heating element is open between the first electrically conductive portion and the second electrically conductive portion at a second end of the stamped bare wire metal heating element.

A condensation tray for condensing tankless water heaters is disclosed. The tray can include a plurality of peaks and valleys. The peaks can divert condensate runoff from a secondary heat exchanger into the valleys so as to prevent the condensate from falling on a primary heat exchanger. The tray includes gas apertures that enable combustion gases to pass through the tray and across the secondary heat exchanger. Overhangs on the peaks can prevent the condensate from draining through the gas apertures.

A biomass heating system for burning fuel in the form of pellets and/or wood chips is disclosed, the system comprising the following: a boiler with a combustion device, a heat exchanger with a plurality of boiler tubes, wherein the combustion device comprises: a combustion chamber with a rotating grate, with a primary combustion zone and with a secondary combustion zone; wherein the primary combustion zone is enclosed by a plurality of combustion chamber bricks laterally and by the rotating grate from below; wherein a plurality of secondary air nozzles is provided in the combustion chamber bricks; wherein the primary combustion zone and the secondary combustion zone are separated at the level of the secondary air nozzles; wherein the secondary combustion zone of the combustion chamber is fluidically connected to an inlet of the heat exchanger.